Wireless Power Transfer Through Variable Media With Inverter Voltage Tuning
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Solution Overview
Problem
Existing wireless power transfer systems face inefficiencies due to sub-optimal power transfer through mediums such as air-gaps or materials like glass, wood, and concrete, leading to reduced average power transfer efficiency.
Innovation Solution
A method involving a controller to adjust the input voltage of an inverter based on detected parameters, such as rectified voltage and impedance, using a synchronous rectifier with toggling operations to enhance power transfer efficiency through mediums.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless power transfer systems use fixed tuning for a particular medium, then the system is optimized for that specific medium, but power transfer efficiency decreases when the medium changes or characteristics are altered
Solution Approach 1:
The patent implements dynamic tuning of the wireless power transfer system by continuously monitoring power transfer efficiency and adjusting system parameters (such as inverter input voltage) in real-time. This allows the system to adapt to changes in the medium between transmitter and receiver, maintaining optimal power transfer efficiency across different materials and conditions rather than being fixed for a single medium configuration
Solution Approach 2:
The system incorporates feedback mechanisms that monitor power transfer efficiency and use this information to dynamically adjust operating parameters. The controller receives feedback about the actual power transfer performance and modifies the inverter input voltage accordingly to optimize efficiency, enabling the system to respond to medium changes and maintain reliable operation across varying conditions
2Productivity
If the system operates with sub-optimal tuning for altered medium characteristics, then the system maintains simplicity, but average power transfer efficiency is reduced
Solution Approach 1:
The wireless power transfer system performs self-optimization by automatically monitoring its own power transfer efficiency and adjusting its operating parameters without external intervention. The controller autonomously modifies the inverter input voltage based on detected efficiency levels, enabling the system to maintain high productivity across different medium conditions while avoiding the complexity of manual retuning or external control systems
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves average power transfer efficiency by optimizing the input voltage of the inverter, allowing for more efficient wireless power transfer through diverse materials and structures.
Implementation Method 1
Power transfer occurs due to coupling of magnetic fields between the coils or inductors of the transmitter and receiver
Implementation Method 2
in resonant magnetic systems in which power is transferred due to coupling of magnetic fields between the coils or inductors of the transmitter and receiver
Implementation Method 3
Power transfer occurs due to coupling of electric fields between the capacitive electrodes of the transmitter and receiver
Data Source
AI summary
There is provided a method of wireless power transfer through a medium. The method comprises controlling an input voltage of an inverter of a transmitter of a wireless power transfer system based on a detected parameter. The method further comprises generating, via the transmitter, a field for transferring power wirelessly through a medium to a receiver of the wireless power transfer system based on the input voltage. Other methods are also provided. There is also provided a controller, system, and transmitter for wirelessly transferring power through a medium.